2 definitions by Bike Man
someone who operates a bicycle in dark or low light conditions with no lights or reflectors and usually wearing dark clothing. Ninja cyclists typically ride against traffic and/or on sidewalks in violation of local laws.
(after slamming on brakes) "I didnt even see that ninja cyclist blow that stop sign. I could have hit him"
by Bike Man November 3, 2009
a person, typically an illegal alien, who rides his bicycle against traffic in violation of the law . Usually a wrong way jose will ride in low light conditions without using lights or reflectors
by Bike Man November 12, 2009